Study Guides

Unit Summary

In this unit pupils will add 3 addends. They will use a strategy such as finding 2 addends to total 10 or 2 numbers to bridge though 10.

Lesson Summary

You will learn to compare the number of objects in two sets or describe the difference between two measures.

Key Notes

• We can compare two sets of items. There are more ___ than ___. There are fewer ___ than ___.
• We can use a range of vocabulary to compare two measures. Longer/shorter, taller/shorter, heavier/lighter etc.
• We can see the difference between two numbers or measures as the 'gap' between them.
• Cubes, bar models and number lines can help us to visualise this 'gap'

Vocabulary To Learn

• More: A larger quantity or amount.
• Fewer: A smaller quantity or amount.
• Difference: The result of subtracting one number from another. Way in which two or more things we are comparing are not the same.

Common Mistakes To Avoid

• Using less and fewer incorrectly when describing and comparing.

3 Quick Questions (With Answers)

More Lessons In This Unit

• Add and subtract two numbers that bridge through 10 Study Guide
• Add three addends Study Guide
• Add three addends efficiently Study Guide
• Add three addends efficiently by finding two addends that total 10 Study Guide
• Add two numbers that bridge through 10 Study Guide
• Calculate the difference Study Guide
• Calculate the difference in different contexts Study Guide
• Calculate the difference when information is presented in a bar chart Study Guide
• Calculate the difference when information is presented in a pictogram Study Guide
• Explain that the addends can be added in any order Study Guide
• Explain what the difference is between consecutive numbers Study Guide
• Use a 'First, then, then, now' story to add three addends Study Guide
• Use knowledge of calculating within 20 to solve problems Study Guide
• Use knowledge of calculating within 20 to solve problems involving statistics Study Guide